![Docker images
Command Description Example
docker images List all images
docker images image name List all images with a name
docker pull image name:[tag] Pull image from repository docker pull hello-world
docker history image name Show history of an image docker history hello-world
docker rmi image name Delete specific image docker rmi hello-world](https://image.slidesharecdn.com/dockerbasics-190311171325/85/Docker-basics-34-320.jpg)
![Run containers
docker run [OPTIONS] IMAGE[:TAG|
@DIGEST] [COMMAND] [ARG…]
docker run hello-world](https://image.slidesharecdn.com/dockerbasics-190311171325/85/Docker-basics-36-320.jpg)
Docker basics
- 2. Requirements Install and configure operating systems TCP/IP CLI semi expert CLI editors (nano, vim, …) Virtual machines environments
- 4. Architecture Traditional servers (bare metal) Virtual machines Containers
- 5. Traditional servers (bare metal) Architecture
- 6. Traditional servers (bare metal) Pros Cons Raw resources use Slow deployment time Isolation Expensive Wasted resources Difficult to scale Difficult to migrate Complex configuration Architecture
- 8. Virtual machines Pros Cons Good use of resources Resource allocation Easy to scale Vendor lockin Easy to backup and migrate Complex configuration Cost efficiency Flexibility Architecture
- 10. Containers Pros Cons Isolation Architecture Lightweight Resource heavy apps Resource effective Easy to migrate Security Low overhead Mirror environments Architecture
- 11. A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another. What is a container?
- 12. What is a container? Container Engine
- 13. Volumes Ports Networks Hosts Links What is a container? (own resources)
- 14. Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. What is docker?
- 16. Basic concepts
- 17. Docker can build images automatically by reading the instructions from a Dockerfile. A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image. Using docker build users can create an automated build that executes several command-line instructions in succession. Dockerfile
- 18. FROM ubuntu:15.04 COPY . /app RUN make /app CMD python /app/app.py Dockerfile
- 19. A Docker image is built up from a series of layers. Each layer represents an instruction in the image’s Dockerfile. Each layer except the very last one is read-only. Docker layers
- 20. Docker layers
- 21. A Docker image is a file, comprised of multiple layers, used to execute code in a Docker container. An image is essentially built from the instructions for a complete and executable version of an application, which relies on the host OS kernel. Docker image
- 23. A container is launched by running an image. An image is an executable package that includes everything needed to run an application the code, a runtime, libraries, environment variables, and configuration files. A container is a runtime instance of an image what the image becomes in memory when executed (that is, an image with state, or a user process). You can see a list of your running containers with the command, docker ps, just as you would in Linux. Docker image vs. container
- 24. The Registry is a stateless, highly scalable server side application that stores and lets you distribute Docker images. The Registry is open-source, under the permissive Apache license. Docker registry
- 25. Docker Hub is a cloud-based registry service which allows you to link to code repositories, build your images and test them, stores manually pushed images, and links to Docker Cloud so you can deploy images to your hosts. It provides a centralized resource for container image discovery, distribution and change management, user and team collaboration, and workflow automation throughout the development pipeline. Docker hub
- 26. In case you want to store your own images you can have a private registry. Private registries
- 27. A container is a standard unit of software that packages up code and all its dependencies so the application runs quickly and reliably from one computing environment to another. Container
- 28. Environment
- 30. Local environment Virtual Box Your computer Linux Debian
- 31. Docker images Image Version Type hello-world latest Application golang 1.11.1-alpine Application gcc latest Application java 7 Application mysql 5.6 Service phpmyadmin/phpmyadmin latest Service mongo latest Service thinkcube/phpmoadmin latest Service nginx stable-alpine Service php 7.2.2-fpm-alpine Service wordpress 4.9.8-php7.2-apache Service
- 32. CLI commands
- 33. Docker docker —version Show docker version docker info Display system information docker rmi {image name} Delete specific image docker —help Show help
- 34. Docker images Command Description Example docker images List all images docker images image name List all images with a name docker pull image name:[tag] Pull image from repository docker pull hello-world docker history image name Show history of an image docker history hello-world docker rmi image name Delete specific image docker rmi hello-world
- 35. Docker containers docker container ls Show containers docker ps Show containers
- 36. Run containers docker run [OPTIONS] IMAGE[:TAG| @DIGEST] [COMMAND] [ARG…] docker run hello-world
- 37. Run containers How to run a container and delete ir after execute docker run --rm hello-world
- 38. Run containers If an image doesn’t exists docker run automatically trigger docker fetch and download the image.
- 39. Docker containers docker stop container Stop container docker rm container Delete container
- 40. Docker containers - volumes Volumes are the preferred mechanism for persisting data generated by and used by Docker containers.
- 41. Docker containers - volumes docker run --rm -v /home/docker/src/gcc:/src gcc gcc /src/hello-world.c -o /src/hello-world
- 42. Workshop TCP/IP ports Image Port phpmyadmin/phpmyadmin 8081 thinkcube/phpmoadmin 8082 nginx 8083 wordpress 8084
- 43. + /Paybook Infrastructure Manager Claudio Montoya Thanks! www.paybook.com